Deb learns that Quinn has broken up with Jamie, apparently because he's still in love with her.

So she drags Quinn outside Miami Metro to talk about it.

As they
walk along the edge of a canal, Quinn tells Deb that he probably would
have broken up with Jamie anyway, because he didn't see a future there.

He tells Deb that he still has feelings for her, and she surprises him by telling him that she still has feelings for him, too.

(Apparently, now that she knows Dex is leaving, Quinn is looking better to her...)

She surprises him even more by suddenly kissing him.

Q. What is it actually in real life?

A. A canal, but nowhere near Miami.

Q. Where can I find it in real life?

A. This is the Naples Canal, that surrounds the main inner island on Naples Island, in Long Beach, CA.

Naples Island is a charming, seaside residential community in Alamitos Bay, known for its canals (and its gondoliers).

To be more specific, this is where The Colonnade (a short street which is basically an extension of Ravenna Drive) meets the canal.

It's just a short walk south of the Naples fountain, where they filmed the accident scene with the dead bicyclist.

At the south end of The Colonnade, there's a small grassy park.
Deb & Quinn are walking next to that park, on the sidewalk that
runs along the outer edge of the island, next to the canal.

To reach this spot, from 2nd Street (the main street that crosses the island), just turn south on Ravenna Drive, drive around the fountain, and continue south until the end of the street, where you'll find the park and the canal.

(The homes seen across the canal are on a smaller island called Treasure Island.)

They've shot before on Naples
Island, but never on this inner island or near the canals. Before,
they stuck to Mother's Beach and Marine Park, on the northeast tip of the larger island, where they filmed several scenes, including the yoga class scene this season.